Fulvio,
First off, thanks for the awesome work and product!! I've been using it for over a year now and love it! I do have minor problem now that I wonder if you or someone on the forums can help me with.

Sprint updated my modem from a 595u to a 598u. The 595u worked fine, however, the 598u comes with a software burned into the ROM of the device they call "Tru-Install" that makes any OS (including Linux and ZS) to mount a drive. When I plug the device into my ZS server, it mounts it as a USB drive instead of a modem. The Ubuntu forums have directions around it, that including running the command "eject /CDROM0" from a prompt, but that doesn't seem to work in ZS.

In some cases, as well as the HSDPA mobile phone N7010, you must manually associate the form of USB-serial conversion device. For example, in the case above we used the command

modprobe usbserial vendor = 0x6000 product = 0x05C6

To automate the loading of kernel module at boot time simply enter the command modprobe mentioned above, within the script Pre Boot using the section [Setup] [Startup / Cron] Zeroshell web interface. If you do not know a priori the values to be assigned to the vendor and product parameters, simply type the dmesg command a few seconds after you connected the modem to the system. These parameters will be displayed by dmesg as idVendor and idProduct

Zen/Fulvio,
I've figured out the sierra driver in ZS is 1.2. The 598u (and any other models with the onboard flash drives) needs the 1.7 drivers. I've tried following the instructions for adding all the tools to compile a package, but I think my skill set is severly lacking Is there a way just the Sierra lib could be compiled and added to the download site?